It bothers me a lot... I didn't see any AEPhi pins on the site imsohappythatiama posted, but I have seen one or two on ebay (and I don't check there all that often).
On the one hand, I don't mind that they're available for sale *to sisters* (or even to new members) who want a badge with some history behind it. If I have a daughter and she joins AEPhi, I will give her my badge - but I may decide I still want a badge of my own, and I don't know how happy I'd be with a shiny new one from national.
On the other hand, non-members are buying up these pins, as well as those of other GLO's, and either turning around and selling them to members for a profit, or disassembling them for the pearls/diamonds/gold/etc they're made from. Ugh. Makes me sick.